IF OBJECT_ID(‘MemberExt1‘) IS NOT NULL    DROP TABLE MemberExt1GOCREATE TABLE MemberExt1    (      MemberId INT NOT NULL,      QRImage NVARCHAR(500) ,      Url NVARCHAR(500)    )EXEC sp_addextendedproperty N‘MS_Description‘,     N‘记录Member的二维码和个人推荐URL‘, N‘user‘, N‘dbo‘,    N‘table‘, N‘MemberExt1‘, NULL, NULLEXEC sp_addextendedproperty N‘MS_Description‘,     N‘会员ID‘, N‘user‘, N‘dbo‘,    N‘table‘, N‘MemberExt1‘, N‘column‘, N‘MemberId‘EXEC sp_addextendedproperty N‘MS_Description‘,     N‘二维码的存放位置‘, N‘user‘, N‘dbo‘,    N‘table‘, N‘MemberExt1‘, N‘column‘, N‘QRImage‘EXEC sp_addextendedproperty N‘MS_Description‘,     N‘个人推荐URL‘, N‘user‘, N‘dbo‘,    N‘table‘, N‘MemberExt1‘, N‘column‘, N‘Url‘